tree 69ceafcf721a1672a59b9bd31667da1b9501f7a5
parent 12d323cf6dd558b442fa3f03af3c7703617eed81
author Mircea Caprioru <mircea.caprioru@analog.com> 1544104395 +0200
committer Jonathan Cameron <Jonathan.Cameron@huawei.com> 1544283909 +0000

iio: dac: ad5686: fix bit shift read register

This patch solves the register readback issue with the bit shift. When the
dac resolution was lower than the register size (ex. 12 bits out of 16
bits) the readback value was not shifted with the difference in bits and
the value was higher. Also a mask is applied on the read value in order to
get the value relative to the actual bit size.

Fixes: 0357e488b8 ("iio:dac:ad5686: Refactor the driver")
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>